Image Source.
It’s not looking good for transits by HD 17156 b. Ron Bissinger of Pleasanton, California obtained a block of photometric data that covered a significant chunk of the transit window. His time series lasts from JD 2454353.68 through 2452353.88, and shows no hint of an event:
His observations were taken just after the peak of the transit midpoint histogram:
No word yet on whether anyone in Europe or the eastern US were able to observe during the first half of the window. If you got data, let me know.
Also, the Gliese 176 window has opened up. If you’ve got a telescope, a CCD, and a free evening, you know what to do!
Dear Greg,
As your satellite image was indicating, Belgian skies were completely clouded on Sep 10/11th, so I had no chance to do photometry on HD 17156 b.
Best regards,
Tonny Vanmunster
http://www.cbabelgium.com
Hi Tonny,
Thanks for the update! Hopefully the window can be closed up sometime this season…
best,
Greg
Hi Greg,
I observed HD17156 in the transit window. Unfortunately the night was windy,
affecting the small telescope so the photometry is not so clear as we would wish. Anybody else observed?
It’s possible that I have a central transit. I can show you some plots if you want.
I will try to observe again on december 3 (I think that is my next opportunity).
Regards,
Jose
[…] In the last post, I pretty much wrote off HD 17156 b, which was the subject of last week’s transitsearch.org photometric follow-up campaign. Ron Bissinger observed the star during the latter part of the transit window, and saw no evidence of a transit. Tonny Vanmunster wrote with the news that Belgium was clouded out. […]